- Study of the Geometry of a Ventilated Tunnel Portal to Reduce the Pressure-Wave Gradient in Railway Tunnels,
D. Heine, G. Lauenroth, S. Huntgeburth and K. Ehrenfried
Paper 2.42 from CCP: 104, ISBN 978-1-905088-59-1 (2014)
- Experimental Study of the Compression-Wave Generation due to Train-Tunnel Entry,
D. Heine and K. Ehrenfried
Paper 163 from CCP: 98, ISBN 978-1-905088-53-9 (2012)